Why surface preparation is the most critical step in metal painting
In short: Painting a radiator or metal surface isn't just about the finish; it's about the chemistry of adhesion. This guide demonstrates how to properly strip, sand, and prime metal to ensure your new coat doesn't flake off within weeks.
The video demonstrates the essential process of preparing metal surfaces for paint, focusing on removing loose flakes, drips, and 'nuggets' of old material. Using a 60-grit hard sandpaper, the presenter shows how to smooth out tops and clear out debris from crevices using a dust brush.
Key techniques include protecting the surrounding wall from overspray and using a solvent-based or oil-based primer rather than water-based options for raw metal spots. This ensures the primer bonds correctly to the surface before the final paint is applied.
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Sources
- Summary by Intellect · source: How to Prep Rusted Radiators & Metal | House Painting
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